The narcissistic landscape is fraught with contradictions. The narcissist depends on people - but hates and despises them. He wants to control them unconditionally - but is also looking to punish himself savagely. He is terrified of persecution ("persecutory delusions") - but seeks the company of his own "persecutors" compulsively.
The narcissist is the victim of incompatible inner dynamics, ruled by numerous vicious circles, pushed and pulled simultaneously by irresistible forces. A minority of narcissists choose the schizoid solution. They choose, in effect, to disengage, both emotionally and socially.
(From the book "Malignant Self-love: Narcissism Revisited" by Sam Vaknin - Click on this link to purchase the print book, or 16 e-books, or 2 DVDs with 12 hours of video lectures on narcissists, psychopaths, and abuse in relationships: http://www.narcissistic-abuse.com/thebook.html)